79673442197 has 4 divisors (see below), whose sum is σ = 83866781280. Its totient is φ = 75480103116.

The previous prime is 79673442179. The next prime is 79673442227. The reversal of 79673442197 is 79124437697.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 79673442197 - 2¹⁶ = 79673376661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79673442137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2096669513 + ... + 2096669550.

It is an arithmetic number, because the mean of its divisors is an integer number (20966695320).

Almost surely, 2^79673442197 is an apocalyptic number.

It is an amenable number.

79673442197 is a deficient number, since it is larger than the sum of its proper divisors (4193339083).

79673442197 is a wasteful number, since it uses less digits than its factorization.

79673442197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4193339082.

The product of its digits is 16003008, while the sum is 59.

The spelling of 79673442197 in words is "seventy-nine billion, six hundred seventy-three million, four hundred forty-two thousand, one hundred ninety-seven".